Writing instrument



FIG. 1 is a front/left/top perspective view of the writing instrument,wherein the front/right/top perspective view would be a mirror imagethereof;

FIG. 2 is a right side view thereof, wherein the left side view would bea mirror image thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a top/rear perspective view thereof;

FIG. 5 is a rear/right/top perspective view thereof, wherein therear/left/top perspective view would be a mirror image thereof;

FIG. 6 is a rear/right/top perspective view thereof (taken at adifferent angle than FIG. 5), wherein the rear/left/top perspective viewwould be a mirror image thereof; and,

FIG. 7 is a top/front view thereof.

The broken lines representing the clip, the clip end, and the other endform no part of the claimed design.

I claim the ornamental design for a writing instrument, as shown anddescribed.